Mercurial > hg
annotate mercurial/filelog.py @ 48436:25c352b58b4e stable
dirstate-v2: test upgrade without rust too
There is no reason to gate this anymore.
Differential Revision: https://phab.mercurial-scm.org/D11865
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Mon, 06 Dec 2021 10:52:40 +0100 |
parents | 2813d406b036 |
children | c514936d92b4 |
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1089 | 1 # filelog.py - file history class for mercurial |
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2 # |
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3 # Copyright 2005-2007 Olivia Mackall <olivia@selenic.com> |
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4 # |
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5 # This software may be used and distributed according to the terms of the |
10263 | 6 # GNU General Public License version 2 or any later version. |
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7 |
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8 from __future__ import absolute_import |
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9 |
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10 from .i18n import _ |
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11 from .node import nullrev |
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12 from . import ( |
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13 error, |
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14 revlog, |
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15 ) |
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16 from .interfaces import ( |
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17 repository, |
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18 util as interfaceutil, |
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19 ) |
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20 from .utils import storageutil |
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21 from .revlogutils import ( |
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22 constants as revlog_constants, |
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23 rewrite, |
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24 ) |
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25 |
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26 |
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27 @interfaceutil.implementer(repository.ifilestorage) |
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28 class filelog(object): |
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29 def __init__(self, opener, path): |
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30 self._revlog = revlog.revlog( |
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31 opener, |
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32 # XXX should use the unencoded path |
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33 target=(revlog_constants.KIND_FILELOG, path), |
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34 radix=b'/'.join((b'data', path)), |
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35 censorable=True, |
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36 ) |
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37 # Full name of the user visible file, relative to the repository root. |
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38 # Used by LFS. |
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39 self._revlog.filename = path |
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40 self.nullid = self._revlog.nullid |
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41 opts = opener.options |
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42 self._fix_issue6528 = opts.get(b'issue6528.fix-incoming', True) |
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43 |
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44 def __len__(self): |
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45 return len(self._revlog) |
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46 |
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47 def __iter__(self): |
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48 return self._revlog.__iter__() |
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49 |
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50 def hasnode(self, node): |
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51 if node in (self.nullid, nullrev): |
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52 return False |
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53 |
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54 try: |
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55 self._revlog.rev(node) |
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56 return True |
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57 except (TypeError, ValueError, IndexError, error.LookupError): |
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58 return False |
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59 |
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60 def revs(self, start=0, stop=None): |
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61 return self._revlog.revs(start=start, stop=stop) |
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62 |
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63 def parents(self, node): |
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64 return self._revlog.parents(node) |
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65 |
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66 def parentrevs(self, rev): |
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67 return self._revlog.parentrevs(rev) |
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68 |
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69 def rev(self, node): |
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70 return self._revlog.rev(node) |
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71 |
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72 def node(self, rev): |
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73 return self._revlog.node(rev) |
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74 |
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75 def lookup(self, node): |
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76 return storageutil.fileidlookup( |
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77 self._revlog, node, self._revlog.display_id |
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78 ) |
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79 |
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80 def linkrev(self, rev): |
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81 return self._revlog.linkrev(rev) |
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82 |
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83 def commonancestorsheads(self, node1, node2): |
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84 return self._revlog.commonancestorsheads(node1, node2) |
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85 |
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86 # Used by dagop.blockdescendants(). |
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87 def descendants(self, revs): |
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88 return self._revlog.descendants(revs) |
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89 |
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90 def heads(self, start=None, stop=None): |
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91 return self._revlog.heads(start, stop) |
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92 |
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93 # Used by hgweb, children extension. |
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94 def children(self, node): |
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95 return self._revlog.children(node) |
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96 |
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97 def iscensored(self, rev): |
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98 return self._revlog.iscensored(rev) |
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99 |
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100 def revision(self, node, _df=None, raw=False): |
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101 return self._revlog.revision(node, _df=_df, raw=raw) |
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102 |
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103 def rawdata(self, node, _df=None): |
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104 return self._revlog.rawdata(node, _df=_df) |
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105 |
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106 def emitrevisions( |
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107 self, |
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108 nodes, |
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109 nodesorder=None, |
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110 revisiondata=False, |
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111 assumehaveparentrevisions=False, |
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112 deltamode=repository.CG_DELTAMODE_STD, |
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113 sidedata_helpers=None, |
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114 ): |
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115 return self._revlog.emitrevisions( |
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116 nodes, |
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117 nodesorder=nodesorder, |
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118 revisiondata=revisiondata, |
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119 assumehaveparentrevisions=assumehaveparentrevisions, |
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120 deltamode=deltamode, |
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121 sidedata_helpers=sidedata_helpers, |
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122 ) |
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123 |
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124 def addrevision( |
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125 self, |
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126 revisiondata, |
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127 transaction, |
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128 linkrev, |
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129 p1, |
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130 p2, |
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131 node=None, |
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132 flags=revlog.REVIDX_DEFAULT_FLAGS, |
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133 cachedelta=None, |
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134 ): |
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135 return self._revlog.addrevision( |
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136 revisiondata, |
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137 transaction, |
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138 linkrev, |
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139 p1, |
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140 p2, |
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141 node=node, |
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142 flags=flags, |
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143 cachedelta=cachedelta, |
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144 ) |
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145 |
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146 def addgroup( |
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147 self, |
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148 deltas, |
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149 linkmapper, |
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150 transaction, |
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151 addrevisioncb=None, |
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152 duplicaterevisioncb=None, |
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153 maybemissingparents=False, |
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154 ): |
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155 if maybemissingparents: |
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156 raise error.Abort( |
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157 _( |
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158 b'revlog storage does not support missing ' |
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159 b'parents write mode' |
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160 ) |
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161 ) |
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162 |
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163 with self._revlog._writing(transaction): |
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164 |
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165 if self._fix_issue6528: |
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166 deltas = rewrite.filter_delta_issue6528(self._revlog, deltas) |
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167 |
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168 return self._revlog.addgroup( |
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169 deltas, |
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170 linkmapper, |
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171 transaction, |
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172 addrevisioncb=addrevisioncb, |
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173 duplicaterevisioncb=duplicaterevisioncb, |
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174 ) |
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175 |
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176 def getstrippoint(self, minlink): |
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177 return self._revlog.getstrippoint(minlink) |
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178 |
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179 def strip(self, minlink, transaction): |
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180 return self._revlog.strip(minlink, transaction) |
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181 |
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182 def censorrevision(self, tr, node, tombstone=b''): |
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183 return self._revlog.censorrevision(tr, node, tombstone=tombstone) |
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184 |
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185 def files(self): |
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186 return self._revlog.files() |
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187 |
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188 def read(self, node): |
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189 return storageutil.filtermetadata(self.revision(node)) |
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191 def add(self, text, meta, transaction, link, p1=None, p2=None): | |
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192 if meta or text.startswith(b'\1\n'): |
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193 text = storageutil.packmeta(meta, text) |
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194 rev = self.addrevision(text, transaction, link, p1, p2) |
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195 return self.node(rev) |
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196 |
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198 return storageutil.filerevisioncopied(self, node) |
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200 def size(self, rev): |
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201 """return the size of a given revision""" |
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202 |
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203 # for revisions with renames, we have to go the slow way |
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204 node = self.node(rev) |
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205 if self.renamed(node): |
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206 return len(self.read(node)) |
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207 if self.iscensored(rev): |
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208 return 0 |
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209 |
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210 # XXX if self.read(node).startswith("\1\n"), this returns (size+4) |
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211 return self._revlog.size(rev) |
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212 |
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213 def cmp(self, node, text): |
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214 """compare text with a given file revision |
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215 |
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216 returns True if text is different than what is stored. |
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217 """ |
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218 return not storageutil.filedataequivalent(self, node, text) |
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219 |
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220 def verifyintegrity(self, state): |
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221 return self._revlog.verifyintegrity(state) |
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222 |
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223 def storageinfo( |
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224 self, |
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225 exclusivefiles=False, |
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226 sharedfiles=False, |
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227 revisionscount=False, |
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228 trackedsize=False, |
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229 storedsize=False, |
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230 ): |
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231 return self._revlog.storageinfo( |
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232 exclusivefiles=exclusivefiles, |
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233 sharedfiles=sharedfiles, |
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234 revisionscount=revisionscount, |
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235 trackedsize=trackedsize, |
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236 storedsize=storedsize, |
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237 ) |
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238 |
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239 # Used by repo upgrade. |
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240 def clone(self, tr, destrevlog, **kwargs): |
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241 if not isinstance(destrevlog, filelog): |
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242 raise error.ProgrammingError(b'expected filelog to clone()') |
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243 |
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244 return self._revlog.clone(tr, destrevlog._revlog, **kwargs) |
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245 |
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246 |
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247 class narrowfilelog(filelog): |
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248 """Filelog variation to be used with narrow stores.""" |
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249 |
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250 def __init__(self, opener, path, narrowmatch): |
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251 super(narrowfilelog, self).__init__(opener, path) |
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252 self._narrowmatch = narrowmatch |
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253 |
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254 def renamed(self, node): |
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255 res = super(narrowfilelog, self).renamed(node) |
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256 |
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257 # Renames that come from outside the narrowspec are problematic |
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258 # because we may lack the base text for the rename. This can result |
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259 # in code attempting to walk the ancestry or compute a diff |
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260 # encountering a missing revision. We address this by silently |
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261 # removing rename metadata if the source file is outside the |
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262 # narrow spec. |
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263 # |
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264 # A better solution would be to see if the base revision is available, |
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265 # rather than assuming it isn't. |
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266 # |
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267 # An even better solution would be to teach all consumers of rename |
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268 # metadata that the base revision may not be available. |
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269 # |
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270 # TODO consider better ways of doing this. |
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271 if res and not self._narrowmatch(res[0]): |
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272 return None |
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273 |
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274 return res |
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275 |
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276 def size(self, rev): |
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277 # Because we have a custom renamed() that may lie, we need to call |
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278 # the base renamed() to report accurate results. |
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279 node = self.node(rev) |
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280 if super(narrowfilelog, self).renamed(node): |
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281 return len(self.read(node)) |
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282 else: |
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283 return super(narrowfilelog, self).size(rev) |
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284 |
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285 def cmp(self, node, text): |
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286 # We don't call `super` because narrow parents can be buggy in case of a |
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287 # ambiguous dirstate. Always take the slow path until there is a better |
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288 # fix, see issue6150. |
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289 |
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290 # Censored files compare against the empty file. |
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291 if self.iscensored(self.rev(node)): |
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292 return text != b'' |
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293 |
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294 return self.read(node) != text |